Writing instrument



FIG. 1 is a top, right side perspective view of a writing instrumentaccording to the present invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view, the right side being a mirrorimage thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The structure depicted by means of broken lines in the figures has beenshown for illustrative purposes only and forms no part of the claimeddesign.

The ornamental design for a writing instrument, as shown and described.